Question:medium

Which of the following parameters is NOT the essential requirement for accuracy of the measurement with the sine bar?

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The accuracy of a sine bar depends entirely on the geometry of its upper surface, the equality and roundness of the two rollers, and the exact distance ($L$) between their centers. Any reference to a flat "bottom surface" is irrelevant to its function.

Updated On: Jul 9, 2026

Flatness of upper surface, equality of size and roundness of rollers
Exact distance between the roller axes and mutual parallelism
Parallelism between top surface and bottom surface
Parallelism of the roller axes to the upper surface

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The Correct Option is C

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Which of the following parameters is NOT the essential requirement for accuracy of the measurement with the sine bar?

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The Correct Option is C

Solution and Explanation

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